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powerpc/mm: use macro PGTABLE_EADDR_SIZE instead of digital

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In case of extending the eaddr in future, use this macro
PGTABLE_EADDR_SIZE to ease the maintenance of the code.

Signed-off-by: Liu Ping Fan <pingfank@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Liu Ping Fan 2013-11-21 10:17:54 +08:00 committed by Benjamin Herrenschmidt
parent d5b35cffe3
commit 5a4e58bc69
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/mm/slb_low.S
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@ -35,7 +35,7 @@ _GLOBAL(slb_allocate_realmode)
* check for bad kernel/user address
* (ea & ~REGION_MASK) >= PGTABLE_RANGE
*/
rldicr. r9,r3,4,(63 - 46 - 4)
rldicr. r9,r3,4,(63 - PGTABLE_EADDR_SIZE - 4)
bne- 8f
srdi r9,r3,60 /* get region */